Id say Nani as he can play on both sides and he can actually score some goals, where Valencia on the other hand can only play on the right side and goes for a cross or a pass rather than trying to shoot and score.
i'd keep nani usually get around 15 million for valencia and is always a.c.milan that buys him and eventually gets sold again for around 6 million.....keep nani
sell both of them and get messi and robben in!! Valencia was **** on my man u save! Not one assist or goal in 15 apps!!!! Nani was ok but then i had messi!